What causes the p0174 code on a Cadillac?
What causes the p0174 code on a Cadillac? If the problem persists the front oxygen (O2) sensor may need to be replaced. The P0174 code could also be caused may be caused by one or more of the following: debris on the MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure, or Engine Control Temperature (ECT) Sensor reading inaccurate. What does the p0171 code in front oxygen sensor mean? If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. If there are no intake...